Public Health Advisories for Kansas Lakes Due to Blue-Green Algae

TOPEKA – The Kansas Department of Health and Environment (KDHE) and the Kansas Department of Wildlife and Parks (KDWP) have expanded public health advisories for Kansas lakes, today, due to blue-green algae to include four new locations.

Marion Reservoir in Marion County is at a Hazard level due to high toxins and high cell count. The Army Corps of Engineers is asking the public to avoid Marion Reservoir and is closing all parks, boat ramps and recreation areas on the reservoir until conditions improve to acceptable levels.

A harmful algal bloom (HAB) may look like foam, scum or paint floating on the water and be colored blue, bright green, brown or red. Blooms can develop rapidly; if the water appears suspicious or there is decaying algae on the shore, avoid contact and keep dogs away. These toxins can be absorbed by ingestion, inhalation of aerosols and even skin contact. Symptoms vary depending upon the type of exposure (e.g. direct contact, ingestion, inhalation) but can include rash, vomiting, diarrhea, fever, sore throat, and headache. If you, or your dog, come into contact with algae rinse the area with clean, fresh water. Suspected HAB-related health incidents, whether human or animal, regardless of season, should be reported at https://www.kdhe.ks.gov/1163. 

Active Advisories

Hazard

Marion Reservoir, Marion County

Warning

Big Eleven Lake, Wyandotte County

Colwich City Lake, Sedgwick County

Gathering Pond, Geary County

Herington City Lake, Dickinson County (Added on June 3)

Jerry Ivey Pond, Saline County

Lake Shawnee, Shawnee County (Added on June 3)

Marion County Lake, Marion County (Added on June 3)

Watch

Garnett Lake (north), Anderson County (Added on June 3)

A Hazard status indicates that a harmful algal bloom is present, and extreme conditions exist.

  • Signage should be posted at all public access locations
  • It is recommended that either a portion of the lake or the entire lake or zone, be closed to the public.
  • In some cases, the adjacent land should be closed as well. Actual setback distances will be determined on a site-specific basis, if necessary.
  • When partial closures (i.e., beach or cove) are issued, the remaining lake or zone area will carry a warning status.

A Warning status indicates that conditions are unsafe for human and pet exposure.  Contact with the waterbody should be avoided.

When a warning is issued, KDHE recommends the following precautions be taken:

  • Lake water is not safe to drink for pets or livestock.
  • Lake water, regardless of blue-green algae status, should never be consumed by humans.
  • Water contact should be avoided.
  • Fish may be eaten if they are rinsed with clean water and only the fillet portion is consumed, while all other parts are discarded.
  • Do not allow pets to eat dried algae.
  • If lake water contacts skin, wash with clean water as soon as possible.
  • Avoid areas of visible algae accumulation.

A Watch status means that blue-green algae have been detected and a harmful algal bloom is present or likely to develop. People are encouraged to avoid areas of algae accumulation and keep pets and livestock away from the water.

During the watch status, KDHE recommends the following precautions be taken:

  • Signage will be posted at all public access locations.
  • Water may be unsafe for humans/animals.
  • Avoid areas of algae accumulation and do not let people/pets eat dried algae or drink contaminated water.
  • Swimming, wading, skiing and jet skiing are discouraged near visible blooms.
  • Boating and fishing are safe. However, inhalation of the spray may affect some individuals. Avoid direct contact with water, and wash with clean water after any contact.
  • Clean fish well with potable water and eat fillet portion only.

KDHE investigates publicly-accessible bodies of water for blue-green algae when the agency receives reports of potential algae blooms in Kansas lakes. Based on credible field observation and sampling results, KDHE reports on potentially harmful conditions.

If you observe a scum or paint-like surface on the water, small floating blue-green clumps or filaments in the water, or if the water is an opaque green, avoid contact and keep pets away. These are indications that a harmful bloom may be present. Pet owners should be aware that animals that swim in or drink water affected by a harmful algal bloom or eat dried algae along the shore may become seriously ill or die.

For information on blue-green algae and reporting potential harmful algal blooms, please visit https://www.kdhe.ks.gov/HAB.

Hot this week

KNDY Area High School Football Scores – 9/25/2026

In recent high school football matches, Clay Center, Hesston, and Marysville achieved solid victories in the North Central Kansas League. The Twin Valley League saw Axtell and Centralia dominate their opponents. Other notable wins included Jefferson Co. West and Riley County in separate matchups. Overall, strong performances characterized the games.

🎙️ Washington County High School’s “The Tiger Talk” – 09/25/2026

Tune into the Washington County High School's "The Tiger...

Farmers urged to start thinking about ARC, PLC decisions

Kansas farmers have extended time to choose the best federal farm program for the 2026 crop, with enrollment running from September 16 to December 11. K-State economist Robin Reid advises utilizing harvest data and current price information to evaluate the Agriculture Risk Coverage (ARC) and Price Loss Coverage (PLC) programs effectively before making a decision.

Latest Headlines

Farm Bureau Insight: More Than Fair Friends

Jackie Mundt reflects on her experience at the Kansas State Fair, highlighting the importance of fostering public awareness of agriculture. While candidates promote their farm backgrounds, she emphasizes that policymakers must prioritize agricultural challenges like rising costs and labor shortages. Ultimately, she calls for representatives committed to actionable solutions for farmers' sustainability.

Sunday Is The Last Chance To See Seven State Historic Sites This Season

The Kansas Historical Society encourages visitors to take advantage...

Flood Watch Issued Across Portions of Kansas, Nebraska, Iowa, and Missouri as Multiple Rounds of Heavy Rain Approach

The National Weather Service has issued Flood Watches for parts of Kansas, Nebraska, Iowa, and Missouri from Tuesday evening to late Thursday due to a moisture-laden system bringing 2 to 4 inches of rain, with some areas receiving up to 5 inches. Residents in flood-prone areas are urged to stay alert and follow safety precautions.

🎙️ Coaches Corner: Southern Raiders – 09/28/2026

Coaches Corner: Southern Raiders - 09/28/2026

🎙️ Coaches Corner: Diller-Odell Griffins – 09/28/2026

Coaches Corner: Diller-Odell Griffins - 09/28/2026

Weather Alert Issued: iNWS Alert

Event extended (time). Flood Watch from 9/29/2026 7:00 PM...

🎙️ KNDY News – 9/28/2026

KNDY News for Monday, September 28, 2026
- Advertisement -

Related Articles

Popular Categories

- Advertisement -